[Amps] Alpha releases New Amp 9500

[David Kirkby]

Karl-Arne Markstro"m wrote:
> Hm...
> 
> If the RS-232 standard has been around more than 50 years, it then would predate transistorised logic circuits.
> The most common computer serial communications standard well into the 60's was the 20 mA single-current loop.

Good point. I never thought of that.

> What this poster meant may have been that serial double-current (or bipolar) signalling has been around for a very long time,
> actually since the first long undersea telegraph cables.

Perhaps, I don't know.

The fact still remains RS-232 has been around a long time, and shows no 
immediate sign of disappearing.

Another option, which might satisfy everyone is to include two 
interfaces. Lots of equipment does this. This for instance has both 
GP-IB and RS-232

http://www.thinksrs.com/products/SR844.htm

Or if that is not enough, take a look at this arbitary function 
generator from Agilent

http://www.home.agilent.com/USeng/nav/-11457.536883183/pd.html

which bas ethernet, GPIB and USB. (Serial is no doubt excluded because 
of the time it would take to download large waveforms).

-- 
David Kirkby,
G8WRB

Please check out http://www.g8wrb.org/
of if you live in Essex http://www.southminster-branch-line.org.uk/